. >>> well, ports along the east coast and gulf coast will be there for 30 days. the u.s. maritime alliance and it was said to expire at 1 minute past midnight on sunday night and the two sides agree to extend the contract while negotiations continue. >> reporter: it would have cost more than $1 billion a day at the longshoreman's union and the u.s. maritime alliance representing the shipping companies did not come to the temporary contract agreement. a federal mediator said, quote, the container royalty payment issue has been agreed upon in prince pa -- principle by the parties. subjects were achieving an overall collective bargaining agreement. at dispute, the wages and container royalty fees which, are salary supplements based on what east container weighs. the shipping companies wa to cap those at last year's level but the nearly 15,000 longshoremen didn't want to froze and what they consider not an extra, but a part of their salaries. the new contract is not agreed upon and imports and exports like electronics, non- perishable foods, auto parts, airline parts, computer components, tile